Obelia
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A straightforward presentation of the form and mode of life of Obelia. The colonies of hydranths are seen to develop blasto-styles and the emergence of the medusae is shown by rapid-motion photography. Emphasis is laid on the alternation of generations.
Copyright
Registered 1Dec70 · MP21320 (Jan-Jun 1971) Copyright holder: Thorne Films, Inc
Sources
- 16mm Filmography (legacy record) — title, description, catalog record
- U.S. Copyright Office, Catalog of Copyright Entries (renewals, 1970–1978) — copyright
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